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Discrete Math and Analyzing Social Graphs
Week 4
Trees

QuizQuiz • 10 min10 minutes

Trees

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Due DateMar 16, 3:59 AM EDTMarch 16, 3:59 AM EDT

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Trees

Graded Quiz • 10 min

Due Mar 16, 3:59 AM EDT

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Trees

Latest Submission Grade

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1.

Question 1

Which of the following graphs are trees?

2 / 2 points

Correct

Yes, this is a tree, even though it doesn't branch.

Correct

Yes, this is a typical tree.

2.

Question 2

Let vertex r be the root vertex of this tree. Which vertex is then the parent of vertex b.

1 / 1 point

a

b

c

d

r

e

f

Correct

Exactly. Vertex c is the next vertex after b on the path to the root.

3.

Question 3

A tree has 10 vertices. How many edges does it have?

1 / 1 point

9

Correct

The number of edges in a tree is the number of vertices minus 1.